342 DESCRIPTIONS OF NEW SPECIES 



above nearly entire and sessile; corymb few-flowered, contracted; outer sepals 

 lanceolate, acute, the inner ovate ; rays about twelve. 



Hab. Near Millidgeville, Georgia. (Dr. Boykin, wlio favoured me with the specimen.) Leaves 

 three to four inches long, about an inch wide, much acuminated. Allied to S. Asteriscus. 



Silphium reniforme; radical leaves reniform-cordate, acute, repand, smooth, 

 beneath very scabrous; stem naked, divaricate; sepals oval, obtuse, smooth'; 

 rays about eight. — S. reniforme; Rapinesque. Nearly allied to ^S. tereUnthi- 

 naceum, but with different leaves. 



BERLANDIERA. (Decand.) 



§ I. * SiLPHIASTRUM. 



Discal florets sterile, with a simple clavate stigma. Achenium subelliptic, 

 compressed, externally convex and angular, entire at the summit, and with- 

 out winged margins or pappus. — Perennial, herbaceous plants of the south- 

 ern states. More or less softly tomentose or villous; leaves deeply toothed, 

 or sinuately pinnatifid, alternate; capituli solitary or corymbose; liguli yel- 

 low, bifid at the apex, externally puberulous, with a very short tube, about 

 ten-nerved, with smooth, elongated, bifid, ligulate, obtuse stigmas. Ache- 

 nium villous on the inner side. — With the whole aspect of Silphium, but 

 the achenium like that of Encelia compared with that of Helianthus. 



Berlandiera *longifoUa; stem and peduncles lanuginous ; leaves ovate-lan- 

 ceolate, dentate, shortly petiolate, beneath softly villous, not canescent; corymb 

 contracted; capituli pedunculate; involucrum imbricated in nearly a simple 

 series, the sepals ovate; rays eight. — Silphium reticulatum? Pursh, but nothing 

 certain can be ascertained from his description. 



Hab. On the plains of Red River, Arkansa; rare. About two feet high. Leaves three to four 

 inches long, an inch and a half to two inches wide, rather coarsely toothed, acute, approximate. 

 Sepals leafy, broad ovate. Rays about eight. Peduncles and stem clothed with dense, long and 

 soft hairs, but not canescent or tomentose. Nearly allied to B. Texana. 



Berlandiera *pumila; stem and leaves beneath canescently tomentose ; leaves 

 short, cordate-ovate, crenate, sessile, somewhat obtuse; fastigiate branches and 

 summit of the stem corymbose ; peduncles long and naked ; involucrum in two 



